Home / 5,186.87-7,780.31-1,900.29

Finding the Fourth Proportional to 5,186.87, 7,780.31 and 1,900.29

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Solution

The fourth proportional to 5,186.87, 7,780.31 and 1,900.29 is: 2,850.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.87 : 7,780.31 = 1,900.29 : x
  2. Step 2: Convert to fraction form
    5,186.87/7,780.31 = 1,900.29/x
  3. Step 3: Cross multiply
    5,186.87x = 7,780.31 × 1,900.29
  4. Step 4: Simplify right side
    5,186.87x = 14,784,835.79
  5. Step 5: Solve for x
    x = 14,784,835.79/5,186.87
  6. Step 6: Final answer
    x = 2,850.44

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.